So for all you online shopping addicts (ahem, me included) this handy little device encrypts your credit card number so you can shop safely without worrying that others might get access to it. It inserts the encrypted number into...So for all you online shopping addicts (ahem, me included) this handy little device encrypts your credit card number so you can shop safely without worrying that others might get access to it. It inserts the encrypted number into the credit card field on whatever site you are purchasing from so you can sleep soundly knowing that malware and hackers cannot steal from you!